2QF4

High resolution structure of the major periplasmic domain from the cell shape-determining filament MreC (orthorhombic form)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.145 

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This is version 1.2 of the entry. See complete history


Literature

High-resolution Structure of the Major Periplasmic Domain from the Cell Shape-determining Filament MreC.

Lovering, A.L.Strynadka, N.C.

(2007) J Mol Biol 372: 1034-1044

  • DOI: https://doi.org/10.1016/j.jmb.2007.07.022
  • Primary Citation of Related Structures:  
    2QF4, 2QF5

  • PubMed Abstract: 

    Bacterial cell shape is dictated by the cell wall, a plastic structure that must adapt to growth and division whilst retaining its function as a selectively permeable barrier. The modulation of cell wall structure is achieved by a variety of enzymatic functions, all of which must be spatially regulated in a precise manner. The membrane-spanning essential protein MreC has been identified as the central hub in this process, linking the bacterial cytoskeleton to a variety of cell wall-modifying enzymes. Additionally, MreC can form filaments, believed to run perpendicularly to the membrane. We present here the 1.2 A resolution crystal structure of the major periplasmic domain of Streptococcus pneumoniae MreC. The protein shows a novel arrangement of two barrel-shaped domains, one of which shows homology to a known protein oligomerization motif, with the other resembling a catalytic domain from a bacterial protease. We discuss the implications of these results for MreC function, and detail the structural features of the molecule that may be responsible for the binding of partner proteins.


  • Organizational Affiliation

    Department of Biochemistry and Molecular Biology and Center for Blood Research, The University of British Columbia, Vancouver, Canada V6T 1R9.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cell shape determining protein MreC
A, B
172Streptococcus pneumoniae R6Mutation(s): 0 
Gene Names: mreC
UniProt
Find proteins for Q8DMY2 (Streptococcus pneumoniae (strain ATCC BAA-255 / R6))
Explore Q8DMY2 
Go to UniProtKB:  Q8DMY2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8DMY2
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.145 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.247α = 90
b = 70.362β = 90
c = 89.763γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
MOSFLMdata reduction
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-08-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.2: 2024-02-21
    Changes: Data collection, Database references, Derived calculations